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    <title>Document</title>
    <style>
        div {
            width: 10px;
            height: 10px;
            border: 50px solid;
            background-color: #ccc;
            border-top-color: #ffff00;
            border-left-color: #ffc0cb;
            border-bottom-color: #008100;
            border-right-color: #0001fe;
        }
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<body>
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</body>

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